Its running on a rb 333 (current ver 3.13) with R52H wireless card, 3m of coax and a 14dbi 60 degrees antenna. Its been runnning on this setup for over a year and with no problems with clients connecting at -47 to -80 dBm.
2 says ago, most but not all clients dropped to a signal in the -85 to -93 area and someone couldnt even connect, but a few still had good connection below -60. neighbours could have over 20 in difference on their signal and I couldnt find a reason for this.
I tried to change frequency but no luck…
Then I disabled the wireless card and enabled it again, and clients is back to their normal signals.. Should I change the wireless card ?
This rb333 runs 2 ap’s. Looking on the status page of them both, there is some difference:
problem ap:
band 5ghz - 5620 MHz
20 clients
overall tx ccq : 25-40%
ack timeout: 243 us
Noise floor: -106 dBm
other ap (same card):
band 5ghz -5600 MHz
8 clients
overall tx ccq: 90-100%
ack timeout: 28 us
Noise floor: -103 dBm
The poor ccq on the bad ap should give it away.
If the card has 2 antenna connectors try the alternate, and remember to change it in the wireless settings.
Next try changing the card.
If that still does not work then replace LMR cabling with New.
Then Pigtails.
Then Antennas.
If all these steps still net you no good results then pull out the specrum analyzer.
Could also be power related problems.
Changed wireless card from R52H to R52 and it got abit better (!)
problem ap:
band 5ghz - 5620 MHz
22 clients (2 new clients connected when the signal got better, now all customers on this ap manage to connect, but one of them with -90dBm :s)
overall tx ccq : 50-70%
ack timeout: 73 us
Noise floor: -106 dBm
2 of the customers connected to the ap is neighbours, its about 40metres between them, and they use the same equipment and cables. One have -64dBm, other have -84dBm. Distance to these customers are about 400m from ap,both have exellent view to the ap.
the neighbouring clients are about 3m above ground, and ap antenna is also 3m above ground, but its placed on a hill above the clients.. 38m + elevation compared to clients.